CISA KEV · Known exploitedCritical

CVE-2021-22941

Citrix ShareFile

Improper Access Control in Citrix ShareFile storage zones controller before 5.11.20 may allow an unauthenticated attacker to remotely compromise the storage zones controller.

CVSS
9.8
EPSS
53.6%
98.9% percentile
CISA KEV
Listed
Published
2021.09.23
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability53.6%
Technical severityCVSS 9.8

Vulnerability overview

Improper Access Control in Citrix ShareFile storage zones controller before 5.11.20 may allow an unauthenticated attacker to remotely compromise the storage zones controller.

Affected product and versions

Product
Citrix ShareFile
Affected versions
5.11.20, < 5.11.20
Fixed versions
5.11.20

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.04.15
  1. 1
    Identify

    Confirm that Citrix ShareFile and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-284
KEV added
2022.03.25
Ransomware use
확인됨
CVE-2021-22941 — Citrix ShareFile | SECUFOCUS NOW